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Jonathan Levitt vs Andrew D Martin
Glasgow (1989), Glasgow SCO
King's Indian Defense: Saemisch Variation. Bronstein Defense (E87)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jul-10-06
Premium Chessgames Member
  plang: This is the queen sacrifice-line that was first played in Spassky-Bronstein in the 1956 Amsterdam Interzonal. Levitt's sacrificial mating combination starting with 24 h5 is quite pretty. 30 Qd7 is much better than 30 g7 when black can just return material with ..30 Ne7
Oct-27-11  DrMAL: Same game in same year as Kasparov vs Seirawan, 1989 except 9.g3 right away with same position anyway (except two moves ahead now) after 10.Qf2 (only good move) and same line after Ke2 (slight inaccuracy) all the way up to 18.Nd3 (instead of 20.Rc3) probably a slight improvement. Here, prophylactic 18...Rf7 was likely best but Andy's 18...c5 was also interesting attempt for counterplay. 19.Qg3 was consistent with K-side attack but 19.dxc6! opening position in center evaluates even better by Houdini.

19...Bh6?! was beginning of black demise, in sharp position more accurate move like 19...Nb6 back or 19...f5 makes difference. Levitt found 20.h4! strong move requiring 20...f5 response. After 20...Bb5?! and exchange of defending B for N not yet participating in attack, 22...f5 was probably no longer enough to survive. With different move order move order 22...Nb4+ 23.Ke2 first white K is in better position so that after 23...f5 Levitt's 24.h5! was decisive (24.Nxf5! was too).

Oct-28-11  SimonWebbsTiger: @<DrMal>

in his notes, Levitt regarded 19. dxc6 bxc6 20. Qe1 Nc7 21. Qa5 Nb5 as giving black compensation.

He thought 20...Be3 an improvement on black's play.

He didn't like 24. Nf5 on account of <24...Bc1 25. Rc1 Nd5 26. Nh6 Kg7 27. ed5 Kh6 28. Qg5 Kg7 29. h5 Rf6 "unclear">

Oct-29-11  DrMAL: Thanx <SWT> it is always interesting to me how players were thinking back then, great for historical perspective. In sharp positions computers make even bigger difference, so that in this group of games involving very sharp sac one can expect serious discrepancies. It is old saying that key to good writing is rewriting, same goes for analysis, Kasparov best showed power of revisit/revise.

After 19...bxc6 retreating 20.Qe1 is not so strong white has several significantly better options (e.g., 20.Qg3 or 20.Rhd1 or computer move 20.b3). Similarly, 21.Qa5?! is weak all of white's advantage (around a pawn worth according to Houdini) is lost by these two poor moves. 21...Nb6 or 21...Ne6 are best, with basically equal game, and third best 21...Nb5 still gives white some advantage (nearly half a pawn according to Houdini).

20...Bxe3 is not improvement it is slightly worse after 21.Kxe3 black has several moves (e.g., 21...Nc7 or 21...Nb6) but white has very strong response for each with similar advantage (probably decisive). Only OK move was 20...f5 leaving white with solid advantage (about a pawn according to Houdini).

24.Nxf5! also clearly wins. Here, 24...Bxc1 runs into obvious 25.h5! not 25.Rxc1?! this is poor analysis by Levitt I am surprised to see such a move assumed. After 25.h5! black can offer back material via 25...Rxf5 26.exf5 or 25...Nxd5 26.hxg6! h5 27.Rxd5! (or 27.Qh4) and pray white blunders easy win.

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